// software developer — building cloud solutions @ P3Fusion Inc.
Kathiresan V
Software Developer with hands-on, production experience across the AWS ecosystem — compute, storage, networking, and IAM — shipping full-stack systems end to end, from the API down to the infrastructure it runs on.
right now: building AI agent harnesses, RAG pipelines, and multi-agent systems in LangGraph — extending cloud engineering into the layer where agents, not just users, call the API.
Current focus
AI agent harness engineering
Designing the scaffolding around LLM calls — tool definitions, context management, and control loops that make an agent reliable rather than a one-shot prompt.
RAG
Retrieval-augmented generation pipelines — chunking, embeddings, and vector search that ground model output in real data instead of guesswork.
LangGraph
Graph-based orchestration for multi-agent systems — stateful control flow, conditional routing, and tool-calling loops built in code, not drag-and-drop.
Cloud engineering → AI engineering
Applying the same AWS and API foundations to a new layer: systems where an agent, not just a user, is the one calling the API.
Top projects
Course registration platform with Google Sign-In authentication. Students enrol in elective and open-elective courses filtered by department eligibility, while staff review offerings and approve registrations through a separate admin flow.
Real-time messaging system split into an Express/MongoDB backend and a React client. Socket.IO handles bidirectional message delivery and live presence, while the backend manages auth and persists conversation history.
Full-stack notes application on the MEAN stack. Angular front end talks to an Express/MongoDB API supporting create, edit, and delete on notes, each with an attached image upload handled server-side.
E-commerce storefront built on Angular 19 with Tailwind CSS for a fully responsive product-browsing UI, structured around Angular's component and routing model for a scalable front-end architecture.
Tech stack
core
- li>Python
- Java
- Object-Oriented Design
- Node.js
- REST APIs
- Full-Stack Development
shipped in projects
- TypeScript / JavaScript
- Angular · React
- Express · MongoDB
- Tailwind CSS
cloud & platform
- AWS (EC2, S3)
- Amazon Connect
Cloud & deployment
Get in touch
Open to collaborating on cloud and AI-agent engineering — reach out, check the code on GitHub, or connect on LinkedIn.